12612807305 has 16 divisors (see below), whose sum is σ = 17590746240. Its totient is φ = 8502191232.

The previous prime is 12612807299. The next prime is 12612807307. The reversal of 12612807305 is 50370821621.

It is a happy number.

12612807305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12612807305 - 2⁴ = 12612807289 is a prime.

It is a super-2 number, since 2×12612807305² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (12612807307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3051884 + ... + 3056013.

It is an arithmetic number, because the mean of its divisors is an integer number (1099421640).

Almost surely, 2^12612807305 is an apocalyptic number.

It is an amenable number.

12612807305 is a deficient number, since it is larger than the sum of its proper divisors (4977938935).

12612807305 is an equidigital number, since it uses as much as digits as its factorization.

12612807305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6107968.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 12612807305 in words is "twelve billion, six hundred twelve million, eight hundred seven thousand, three hundred five".